<s>
Unchained	B-Application
Blades	I-Application
,	O
titled	O
in	O
Japan	O
,	O
is	O
a	O
2011	O
dungeon	O
crawler	O
role-playing	O
video	O
game	O
developed	O
by	O
FuRyu	O
and	O
published	O
by	O
Xseed	O
Games	O
for	O
the	O
Nintendo	B-Operating_System
3DS	I-Operating_System
and	O
PlayStation	B-Operating_System
Portable	I-Operating_System
.	O
</s>
<s>
The	O
game	O
is	O
played	O
as	O
a	O
dungeon	O
crawler	O
role-playing	O
video	O
game	O
,	O
similar	O
to	O
Wizardry	B-Device
,	O
but	O
with	O
a	O
greater	O
emphasis	O
on	O
story	O
.	O
</s>
<s>
The	O
purpose	O
of	O
the	O
game	O
is	O
to	O
direct	O
the	O
game	O
's	O
party	O
through	O
mazes	B-Application
and	O
labyrinths	B-Application
while	O
defeating	O
opposing	O
monster	O
parties	O
.	O
</s>
<s>
The	O
game	O
's	O
director	O
is	O
Toshio	O
Akashi	O
,	O
who	O
previously	O
worked	O
on	O
Lunar	O
,	O
and	O
the	O
scenario	O
designer	O
is	O
Takashi	O
Hino	O
,	O
who	O
previously	O
worked	O
on	O
Grandia	B-Application
.	O
</s>
<s>
The	O
Nintendo	B-Operating_System
3DS	I-Operating_System
and	O
PlayStation	B-Operating_System
Portable	I-Operating_System
versions	O
are	O
almost	O
identical	O
,	O
the	O
differences	O
being	O
mainly	O
visual	O
.	O
</s>
<s>
The	O
3DS	B-Operating_System
version	O
is	O
the	O
only	O
one	O
that	O
features	O
stereoscopic	B-Algorithm
3D	I-Algorithm
graphics	O
.	O
</s>
<s>
Additionally	O
,	O
the	O
placement	O
of	O
the	O
overhead	O
map	O
of	O
the	O
levels	O
is	O
different	O
platforms	O
;	O
for	O
the	O
3DS	B-Operating_System
,	O
it	O
's	O
on	O
the	O
second	O
,	O
bottom	O
screen	O
,	O
where	O
on	O
the	O
PSP	B-Operating_System
,	O
which	O
lacks	O
a	O
second	O
screen	O
,	O
it	O
is	O
merely	O
layered	O
over	O
the	O
main	O
screen	O
,	O
with	O
the	O
option	O
to	O
toggle	O
it	O
on	O
or	O
off	O
.	O
</s>
<s>
Xseed	O
Games	O
originally	O
teased	O
the	O
localization	O
of	O
the	O
video	O
game	O
through	O
a	O
guessing	O
game	O
through	O
its	O
Twitter	B-Application
.	O
</s>
<s>
The	O
game	O
's	O
localization	O
was	O
officially	O
confirmed	O
through	O
the	O
April	O
2012	O
issue	O
of	O
Nintendo	B-Application
Power	I-Application
.	O
</s>
<s>
The	O
game	O
received	O
"	O
mixed	O
"	O
reviews	O
on	O
both	O
platforms	O
according	O
to	O
the	O
review	B-Application
aggregation	I-Application
website	O
Metacritic	O
.	O
</s>
<s>
Both	O
versions	O
of	O
the	O
game	O
charted	O
in	O
their	O
first	O
week	O
of	O
release	O
in	O
Japan	O
;	O
the	O
PlayStation	B-Operating_System
Portable	I-Operating_System
version	O
charted	O
at	O
seventh	O
place	O
with	O
18,256	O
copies	O
sold	O
,	O
while	O
the	O
Nintendo	B-Operating_System
3DS	I-Operating_System
version	O
charted	O
at	O
twentieth	O
place	O
with	O
5,592	O
copies	O
sold	O
.	O
</s>
<s>
A	O
sequel	O
titled	O
Unchained	B-Application
Blades	I-Application
Exiv	O
was	O
developed	O
and	O
released	O
on	O
November	O
29	O
,	O
2012	O
in	O
Japan	O
for	O
the	O
PlayStation	B-Operating_System
Portable	I-Operating_System
and	O
Nintendo	B-Operating_System
3DS	I-Operating_System
.	O
</s>
